Answers

You have a couple of problems in your code.

First, you aren't asking for the user_birthday permission when you create your $loginUrl. You should be requesting the same permissions for req_perms on line 33 as you do in the <fb:login-button> on line 68 of your code: email,user_birthday,status_update,publish_stream.

Once you copy over the permissions, you can remove line 68 of your code. The <fb:login-button> tag won't work without the JavaScript SDK.

Calling header() on line 61 after you've output text to the browser on lines 37-58 won't work. If you are going to redirect the browser, you can only do this before you've output text. Move this block of code before you output anything and it will work.

The white space between your ?> on line 36 and <!doctype> on line 39 will be output at the top of your HTML file. It cause the Facebook parser to choke. Some browsers don't like white space at the beginning of an HTML document either and will render your page incorrectly. Your code should really be ?><!doctype